> Still... perhaps others will be so inclined to describe it from their own experience?
*****
To which I've got to say: "Where's the beef?"

In other words, it remains the province of myth because, imo, it IS myth. And with the acceptance of a myth as some kind of historical fact/characteristic-of-knowledge comes a problem, occlusion of nondual truth. If I believe that self-realization comes with magic powers, how will I be able to recognize nondual truth as it already exists within if it's not accompanied by those powers? I've been lucky to encounter a few folks who've come to understand nondual truth as it exists within, and not a single one claims any special powers for themselves as a result. This leads me to believe that siddhis are legend based in myth rather than fact, and that the pursuit of them is like a search for the Holy Grail. Many believe it exists, but nobody has found it yet, making any searching for it likely to fail if you take history into account.

Aghora can be used to pursue siddhis, and it can be used to pursue self-realization. Many find these to be the same thing, unfortunately at the peril of their own nondual understanding, imo.